Chemistry-Stud. Solution Guide
9th Edition
ISBN: 9781285697185
Author: ZUMDHAL
Publisher: CENGAGE L
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Textbook Question
Chapter 11, Problem 9RQ
Distinguish between a strong electrolyte, a weak electrolyte, and a nonelectrolyte. How can colligative properties be used to distinguish between them? What is the van’t Hoff factor? Why is the observed freezing-point depression for electrolyte solutions sometimes less than the calculated value? Is the discrepancy greater for concentrated or dilute solutions?
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Decide whether these proposed Lewis structures are reasonable.
proposed Lewis structure
Yes.
Is the proposed Lewis structure reasonable?
Cl-
: 2:
:Z:
:Z:
N—N
: 0:
C C1:
O CO
No, it has the wrong number of valence electrons.
The correct number is: ☐
No, it has the right number of valence electrons but doesn't satisfy the
octet rule.
The symbols of the problem atoms are:* ☐
Yes.
No, it has the wrong number of valence electrons.
The correct number is: ☐
No, it has the right number of valence electrons but doesn't satisfy the
octet rule.
The symbols of the problem atoms are:* |
Yes.
No, it has the wrong number of valence electrons.
The correct number is:
No, it has the right number of valence electrons but doesn't satisfy the
octet rule.
The symbols of the problem atoms are:* |
If two or more atoms of the same element don't satisfy the octet rule, just enter the chemical symbol as many
times as necessary. For example, if two oxygen atoms don't satisfy the octet rule, enter "0,0".
☑
Use the observations about each chemical reaction in the table below to decide the sign (positive or negative) of the reaction enthalpy AH and reaction entropy
AS.
Note: if you have not been given enough information to decide a sign, select the "unknown" option.
reaction
observations
conclusions
ΔΗ is
(pick one)
A
This reaction is faster above 103. °C than
below.
AS is
(pick one)
ΔΗ is
(pick one)
B
This reaction is spontaneous only above
-9. °C.
AS is
(pick one)
ΔΗ is
(pick one)
C
The reverse of this reaction is always
spontaneous.
AS is
(pick one)
18
Ar
Use the observations about each chemical reaction in the table below to decide the sign (positive or negative) of the reaction enthalpy AH and reaction entropy
AS.
Note: if you have not been given enough information to decide a sign, select the "unknown" option.
reaction
observations
conclusions
A
The reverse of this reaction is always
spontaneous but proceeds slower at
temperatures below 41. °C.
ΔΗ is
(pick one)
AS is
(pick one)
ΔΗ is
(pick one)
B
This reaction is spontaneous except above
94. °C.
AS is
(pick one)
This reaction is always spontaneous, but
ΔΗ is
(pick one)
C
proceeds slower at temperatures below
−14. °C.
AS is
(pick one)
Х
00.
18
Ar
무ㅎ
B
1
1
Chapter 11 Solutions
Chemistry-Stud. Solution Guide
Ch. 11 - Prob. 1RQCh. 11 - Using KF as an example, write equations that refer...Ch. 11 - Prob. 3RQCh. 11 - Prob. 4RQCh. 11 - Define the terms in Raoults law. Figure 10-9...Ch. 11 - In terms of Raoults law, distinguish between an...Ch. 11 - Vapor-pressure lowering is a colligative property,...Ch. 11 - What is osmotic pressure? How is osmotic pressure...Ch. 11 - Distinguish between a strong electrolyte, a weak...Ch. 11 - Prob. 10RQ
Ch. 11 - Prob. 1ALQCh. 11 - Once again, consider Fig. 10-9. Suppose instead of...Ch. 11 - Prob. 3ALQCh. 11 - Prob. 4ALQCh. 11 - You have read that adding a solute to a solvent...Ch. 11 - You drop an ice cube (made from pure water) into a...Ch. 11 - Using the phase diagram for water and Raoults law,...Ch. 11 - You and your friend are each drinking cola from...Ch. 11 - Prob. 9ALQCh. 11 - Prob. 10ALQCh. 11 - Rubbing alcohol contains 585 g isopropanol...Ch. 11 - Prob. 12SRCh. 11 - Prob. 13SRCh. 11 - Prob. 14SRCh. 11 - Calculate the sodium ion concentration when 70.0...Ch. 11 - Write equations showing the ions present after the...Ch. 11 - Rationalize the temperature dependence of the...Ch. 11 - The weak electrolyte NH3(g) does not obey Henrys...Ch. 11 - The two beakers in the sealed container...Ch. 11 - The following plot shows the vapor pressure of...Ch. 11 - When pure methanol is mixed with water, the...Ch. 11 - Prob. 22QCh. 11 - For an acid or a base, when is the normality of a...Ch. 11 - Prob. 24QCh. 11 - Prob. 25QCh. 11 - Prob. 26QCh. 11 - Explain the terms isotonic solution, crenation,...Ch. 11 - Prob. 28QCh. 11 - Prob. 29ECh. 11 - Prob. 30ECh. 11 - Common commercial acids and bases are aqueous...Ch. 11 - In lab you need to prepare at least 100 mL of each...Ch. 11 - Prob. 33ECh. 11 - Prob. 34ECh. 11 - Prob. 35ECh. 11 - Calculate the molarity and mole fraction of...Ch. 11 - Prob. 37ECh. 11 - Prob. 38ECh. 11 - Prob. 39ECh. 11 - a. Use the following data to calculate the...Ch. 11 - Although Al(OH)3 is insoluble in water, NaOH is...Ch. 11 - Prob. 42ECh. 11 - Prob. 43ECh. 11 - Prob. 44ECh. 11 - For each of the following pairs, predict which...Ch. 11 - Which ion in each of the following pairs would you...Ch. 11 - Rationalize the trend in water solubility for the...Ch. 11 - In flushing and cleaning columns used in liquid...Ch. 11 - The solubility of nitrogen in water is 8.21 104...Ch. 11 - Calculate the solubility of O2 in water at a...Ch. 11 - Glycerin, C3H8O3, is a nonvolatile liquid. What is...Ch. 11 - The vapor pressure of a solution containing 53.6 g...Ch. 11 - The normal boiling point of diethyl ether is...Ch. 11 - At a certain temperature, the vapor pressure of...Ch. 11 - A solution is made by dissolving 25.8 g urea...Ch. 11 - A solution of sodium chloride in water has a vapor...Ch. 11 - Prob. 57ECh. 11 - A solution is prepared by mixing 0.0300 mole of...Ch. 11 - What is the composition of a methanol...Ch. 11 - Benzene and toluene form an ideal solution....Ch. 11 - Which of the following will have the lowest total...Ch. 11 - Prob. 62ECh. 11 - Match the vapor pressure diagrams with the...Ch. 11 - The vapor pressures of several solutions of...Ch. 11 - A solution is prepared by dissolving 27.0 g urea,...Ch. 11 - A 2.00-g sample of a large biomolecule was...Ch. 11 - What mass of glycerin (C3H8O3), a nonelectrolyte,...Ch. 11 - The freezing point of 1-butanol is 25.50C and Kf...Ch. 11 - Prob. 69ECh. 11 - What volume of ethylene glycol (C2H6O2), a...Ch. 11 - Reserpine is a natural product isolated from the...Ch. 11 - A solution contains 3.75 g of a nonvolatile pure...Ch. 11 - a. Calculate the freezing-point depression and...Ch. 11 - Erythrocytes are red blood cells containing...Ch. 11 - Prob. 75ECh. 11 - Prob. 76ECh. 11 - Prob. 77ECh. 11 - Prob. 78ECh. 11 - Consider the following solutions: 0.010 m Na3PO4...Ch. 11 - From the following: pure water solution of...Ch. 11 - Prob. 81ECh. 11 - Prob. 82ECh. 11 - Prob. 83ECh. 11 - Consider the following representations of an ionic...Ch. 11 - Prob. 85ECh. 11 - Prob. 86ECh. 11 - Use the following data for three aqueous solutions...Ch. 11 - The freezing-point depression of a 0.091-m...Ch. 11 - Prob. 89ECh. 11 - A 0.500-g sample of a compound is dissolved in...Ch. 11 - The solubility of benzoic acid (HC7H5O2), is 0.34...Ch. 11 - Prob. 92AECh. 11 - In Exercise 96 in Chapter 8, the pressure of CO2...Ch. 11 - Explain the following on the basis of the behavior...Ch. 11 - The term proof is defined as twice the percent by...Ch. 11 - Prob. 97AECh. 11 - Prob. 98AECh. 11 - A solution is made by mixing 50.0 g acetone...Ch. 11 - Prob. 100AECh. 11 - Thyroxine, an important hormone that controls the...Ch. 11 - Prob. 102AECh. 11 - An unknown compound contains only carbon,...Ch. 11 - Prob. 104AECh. 11 - Prob. 105AECh. 11 - Prob. 106AECh. 11 - Prob. 107AECh. 11 - Prob. 108AECh. 11 - Patients undergoing an upper gastrointestinal...Ch. 11 - Prob. 110CWPCh. 11 - The lattice energy of NaCl is 786 kJ/mol, and the...Ch. 11 - For each of the following pairs, predict which...Ch. 11 - The normal boiling point of methanol is 64.7C. A...Ch. 11 - A solution is prepared by mixing 1.000 mole of...Ch. 11 - Prob. 115CWPCh. 11 - A 4.7 102 mg sample of a protein is dissolved in...Ch. 11 - A solid consists of a mixture of NaNO3 and...Ch. 11 - The vapor pressure of pure benzene is 750.0 torr...Ch. 11 - Prob. 119CPCh. 11 - Plants that thrive in salt water must have...Ch. 11 - You make 20.0 g of a sucrose (C12H22O11) and NaCl...Ch. 11 - Prob. 122CPCh. 11 - The vapor in equilibrium with a pentane-hexane...Ch. 11 - A forensic chemist is given a white solid that is...Ch. 11 - A 1.60-g sample of a mixture of naphthalene...Ch. 11 - Prob. 126CPCh. 11 - Prob. 127CPCh. 11 - You have a solution of two volatile liquids, A and...Ch. 11 - In some regions of the southwest United States,...Ch. 11 - Creatinine, C4H7N3O, is a by-product of muscle...Ch. 11 - An aqueous solution containing 0.250 mole of Q, a...Ch. 11 - Anthraquinone contains only carbon, hydrogen, and...
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Solutions: Crash Course Chemistry #27; Author: Crash Course;https://www.youtube.com/watch?v=9h2f1Bjr0p4;License: Standard YouTube License, CC-BY